CVE-2026-27476

9.3 criticalEPSS 3.0%

Critical (9.3). EPSS 3.0% chance of exploitation in the next 30 days.

RustFly 2.0.0 contains a command injection vulnerability in its remote UI control mechanism that accepts hex-encoded instructions over UDP port 5005 without proper sanitization. Attackers can send crafted hex-encoded payloads containing system commands to execute arbitrary operations on the target system, including reverse shell establishment and command execution.

Severity

CVSS 4.0

9.3 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 3.0% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2026-02-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://packetstorm.news/files/id/215819/
https://www.vulncheck.com/advisories/rustfly-command-injection-via-udp-remote-control

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